possible Lesser White-fronted Goose x Cackling Goose, Hornsea Mere (Yorkshire, UK), 28th March 2009 - copyright Mark Coates
(photo ID: 2107)
The identity of this bird is still a mystery. The small size means at least one of the small species should be involved. The square head may indicate Cackling Goose but the bill seems a fraction longer than might be expected on Lesser White-fronted Goose x Cacking Goose.
Lesser White-fronted Goose Anser erythropus
Cackling Goose Branta hutchinsii